Curie temperature control by band parameters tuning in Pb<sub>1−x−y−z</sub>Mn<sub>x</sub>Sn<sub>y</sub>Eu<sub>z</sub>Te
Kuryliszyn-Kudelska, I; Dobrowolski, W; Arciszewska, M; Domukhovski, V; Dugaev, V K; Slyn'ko, V E; Slyn'ko, E I; Fita, I M; Kuryliszyn-Kudelska, I; Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw, Poland; Dobrowolski, W; Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw, Poland; Arciszewska, M; Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw, Poland; Domukhovski, V; Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw, Poland; Dugaev, V K; Institute of Material Science Problems, Ukrainian Academy of Sciences, 5 Wilde Street, 274001, Chernovtsy, Ukraine; Department of Physics and Center for Physics of Fundamental Interactions, Av. Rovisco Pais, 1049-001 Lisbon, Portugal; Slyn'ko, V E; Institute of Material Science Problems, Ukrainian Academy of Sciences, 5 Wilde Street, 274001, Chernovtsy, Ukraine; Slyn'ko, E I; Institute of Material Science Problems, Ukrainian Academy of Sciences, 5 Wilde Street, 274001, Chernovtsy, Ukraine; Fita, I M; Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw, Poland; Donetsk Institute for Physics and Technology, National Academy of Sciences, R Luxemburg str. 72, 83114 Donetsk, Ukraine
Журнал:
Semiconductor Science and Technology
Дата:
2006-08-01
Аннотация:
We present the study of magnetic and transport properties of Pb<sub>1−x−y−z</sub>Mn<sub>x</sub>Sn<sub>y</sub>Eu<sub>z</sub>Te. AC magnetic susceptibility measurements as well as transport characterization were performed. The obtained results indicate that the presence of two types of magnetic ions influences the magnetic properties of the investigated IV–VI semimagnetic semiconductor. Qualitative analysis and possible mechanisms of the substantial dependence of the Curie temperature on the Eu content are presented. The most likely reason of the observed Curie temperature behaviour is a strong dependence of the location of a heavy mass Σ band upon the alloy composition. Theoretical calculations in frame of simple models confirm this point.
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